122 lines
3.9 KiB
Makefile
122 lines
3.9 KiB
Makefile
#
|
|
# Make Linux headers of the host platform available to the program
|
|
#
|
|
include $(call select_from_repositories,lib/import/import-syscall-linux.mk)
|
|
|
|
#
|
|
# Manually supply all library search paths of the host compiler to our tool
|
|
# chain.
|
|
#
|
|
HOST_LIB_SEARCH_DIRS = $(shell $(CUSTOM_HOST_CC) $(CC_MARCH) -print-search-dirs | grep libraries |\
|
|
sed "s/.*=//" | sed "s/:/ /g" |\
|
|
sed "s/\/ / /g" | sed "s/\/\$$//")
|
|
#
|
|
# Add search path for 'limits.h'
|
|
#
|
|
# We cannot simply extend 'INC_DIR' because this would give precedence to the
|
|
# host include search paths over Genode search path. The variable HOST_INC_DIR
|
|
# is appended to the include directory list.
|
|
#
|
|
HOST_INC_DIR += $(shell echo "int main() {return 0;}" |\
|
|
LANG=C $(CXX) -x c++ -v -E - 2>&1 |\
|
|
sed '/^\#include <\.\.\.> search starts here:/,/^End of search list/!d' |\
|
|
grep "include-fixed")
|
|
|
|
#
|
|
# Add search paths for normal libraries
|
|
#
|
|
CXX_LINK_OPT += $(addprefix -L,$(HOST_LIB_SEARCH_DIRS))
|
|
|
|
#
|
|
# Determine ldconfig executable
|
|
#
|
|
# On Ubuntu, /sbin/ is in the PATH variable. Hence we try using the program
|
|
# found via 'which'. If 'which' does not return anything (i.e., on Debian),
|
|
# try using the expected location '/sbin/'.
|
|
#
|
|
LDCONFIG := $(firstword $(wildcard $(shell which ldconfig) /sbin/ldconfig))
|
|
ifeq ($(LDCONFIG),)
|
|
$(error ldconfig is not found)
|
|
endif
|
|
|
|
#
|
|
# Add search paths for shared-library lookup
|
|
#
|
|
# We add all locations of shared libraries present in the ld.cache to our
|
|
# library search path.
|
|
#
|
|
HOST_SO_SEARCH_DIRS := $(sort $(dir $(shell $(LDCONFIG) -p | sed "s/^.* \//\//" | grep "^\/")))
|
|
LINK_ARG_PREFIX := -Wl,
|
|
CXX_LINK_OPT += $(addprefix $(LINK_ARG_PREFIX)-rpath-link $(LINK_ARG_PREFIX),$(HOST_SO_SEARCH_DIRS))
|
|
|
|
#
|
|
# Make exceptions work
|
|
#
|
|
CXX_LINK_OPT += -Wl,--eh-frame-hdr
|
|
|
|
#
|
|
# Add all libraries and their dependencies specified at the 'LX_LIBS'
|
|
# variable to the linker command line
|
|
#
|
|
ifneq ($(LX_LIBS),)
|
|
LX_LIBS_OPT = $(shell pkg-config --static --libs $(LX_LIBS))
|
|
endif
|
|
|
|
#
|
|
# Use the host's startup codes, linker script, and dynamic linker
|
|
#
|
|
LD_TEXT_ADDR ?=
|
|
LD_SCRIPT_STATIC ?=
|
|
|
|
EXT_OBJECTS += $(shell $(CUSTOM_HOST_CC) $(CC_MARCH) -print-file-name=crt1.o)
|
|
EXT_OBJECTS += $(shell $(CUSTOM_HOST_CC) $(CC_MARCH) -print-file-name=crti.o)
|
|
EXT_OBJECTS += $(shell $(CUSTOM_CC) $(CC_MARCH) -print-file-name=crtbegin.o)
|
|
EXT_OBJECTS += $(shell $(CUSTOM_CC) $(CC_MARCH) -print-file-name=crtend.o)
|
|
EXT_OBJECTS += $(shell $(CUSTOM_HOST_CC) $(CC_MARCH) -print-file-name=crtn.o)
|
|
|
|
LX_LIBS_OPT += -lgcc -lgcc_s -lsupc++ -lc -lpthread
|
|
|
|
USE_HOST_LD_SCRIPT = yes
|
|
|
|
#
|
|
# We need to manually add the default linker script on the command line in case
|
|
# of standard library use. Otherwise, we were not able to extend it by the
|
|
# stack area section.
|
|
#
|
|
ifeq (x86_64,$(findstring x86_64,$(SPECS)))
|
|
CXX_LINK_OPT += -Wl,--dynamic-linker=/lib64/ld-linux-x86-64.so.2
|
|
LD_SCRIPT_DEFAULT = ldscripts/elf_x86_64.xc
|
|
endif
|
|
|
|
ifeq (x86_32,$(findstring x86_32,$(SPECS)))
|
|
CXX_LINK_OPT += -Wl,--dynamic-linker=/lib/ld-linux.so.2
|
|
LD_SCRIPT_DEFAULT = ldscripts/elf_i386.xc
|
|
endif
|
|
|
|
ifeq (arm,$(findstring arm,$(SPECS)))
|
|
CXX_LINK_OPT += -Wl,--dynamic-linker=/lib/ld-linux.so.3
|
|
LD_SCRIPT_STATIC = ldscripts/armelf_linux_eabi.xc
|
|
endif
|
|
|
|
#
|
|
# Because we use the host compiler's libgcc, omit the Genode toolchain's
|
|
# version and put all libraries here we depend on.
|
|
#
|
|
LD_LIBGCC = $(LX_LIBS_OPT)
|
|
|
|
# use the host c++ for linking to find shared libraries in DT_RPATH library paths
|
|
LD_CMD = $(CUSTOM_HOST_CXX)
|
|
|
|
# disable format-string security checks, which prevent non-literal format strings
|
|
CC_OPT += -Wno-format-security
|
|
|
|
#
|
|
# Disable position-independent executables (which are enabled by default on
|
|
# Ubuntu 16.10 or newer)
|
|
#
|
|
CXX_LINK_OPT_NO_PIE = $(shell \
|
|
(echo "int main(){}" | $(CUSTOM_HOST_CXX) -no-pie -x c++ - -o /dev/null >& /dev/null \
|
|
&& echo "-no-pie") || true)
|
|
CXX_LINK_OPT += $(CXX_LINK_OPT_NO_PIE)
|
|
|